Sub-Zero Applications
What kind of lubricant would best suit your operating needs? One that stands up to tough temperature extremes? One that can save you time and cost? Krytox® lubricants do both. DuPont synthetic lubricants offer outstanding performance at temperatures from two degrees Kelvin (2º above absolute zero). Krytox® lubricants for low temperatures have pour points that are lower than -75 ºC (-103 ºF). Even below these temperatures, Krytox® lubricants are not damaged. When they return to a fluid state, they will continue to lubricate as before. At extreme low temperatures, Krytox® has even been used to improve heat transfer in cryostats.

High Heat Applications
When the heat is really on, you need a high temperature grease or high temperature oil that can take it without performance degradation. DuPont™ Krytox® XHT synthetic lubricants are specially formulated for extreme high-temperature applications. Krytox® XHT is a perfluoropolyether- (PFPE-) based polymer composed of fluorine, oxygen and carbon. No hydrogen is present in the molecule, resulting in exceptional stability and non-flammability.

Targeted for use in the very high-temperature range, these ultra-high-temperature-grade oils and greases offer low evaporation and remarkably stable lubrication performance at temperatures above the range of normal PFPE-based oils or conventional hydrocarbon-based lubricants. Krytox® XHT lubricants are available in several grades that offer anticorrosion, extra bonding, and non-melting properties. These lubricants serve a variety of industries, including chemical, textile, tire, aviation, conveyor, oil and gas, glass, plastic film, and non-woven manufacturing, as well as mining and metal processing.

Non-flammable — Krytox® XHT will not burn or support combustion, even in 100% liquid or gaseous oxygen — providing high-temperature stability up to 399 °C (762 °F)

Longer component use-life, less downtime and less frequent re-lubrication

No oxidation and low volatility

Undamaged by — and non-reactive with — acidic or caustic cleaners and disinfectants, steam, moisture and high temperatures

Insoluble in most solvents — but soluble in highly fluorinated fluids and some supercritical fluids such as CO2

Ideal for all components, including bearings, seals, valves, O-rings, chains, gearboxes and agitators

Minimal environmental footprint

Chemically and biologically inert and silicone-free

Safe for use around oxygen, and non-reactive with chemicals typically used in industrial applications

Contain no volatile organic compound (VOC) materials or chlorine

Compatibility with Metals
Because DuPont™ Krytox® XHT oils are chemically inert, they have little or no adverse effect on metals in temperatures below 288 °C (550 °F). DuPont™ Krytox® oil can begin to slowly degrade at temperatures above 350 °C (662 °F), and degradation will occur at an increasing rate as temperatures increase further. Re-lubrication could be required at these temperatures to achieve optimum life.

Krytox® XHT lubricants are available in a variety of formulations to meet the specific performance requirements of your application.